Download Ad Hoc Networks: 5th International ICST Conference, by Zayneb Trabelsi Ayoub, Sofiane Ouni (auth.), Mostafa Hashem PDF

By Zayneb Trabelsi Ayoub, Sofiane Ouni (auth.), Mostafa Hashem Sherif, Abdelhamid Mellouk, Jun Li, Paolo Bellavista (eds.)

This publication constitutes the completely refereed lawsuits of the fifth overseas convention on advert Hoc Networks, ADHOCNETS 2013, held in Barcelona, Spain, in October 2013. The 14 revised complete papers awarded have been rigorously chosen and reviewed from a variety of submissions and canopy quite a lot of purposes, advertisement and army comparable to cellular advert hoc networks, sensor networks, vehicular networks, underwater networks, underground networks, own sector networks, domestic networks and large-scale metropolitan networks for clever towns. they're equipped in topical sections on instant sensor networks, routing, purposes and security.

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Extra info for Ad Hoc Networks: 5th International ICST Conference, ADHOCNETS 2013, Barcelona, Spain, October 2013, Revised Selected Papers

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5. End-to-end delay of sensors for varying partition count. Node count: 100, MDC count: 2 (a). End-to-end delay of sensors for varying node count. Partition count:6, MDC count: 2 (b). Figure 5a portrays the results for varying number of partitions when the number of nodes and available MDC count is fixed. It can be observed from Fig. 5a that delay is increasing for all of the approaches when the number of partitions is increased. This can be explained as follows: For a partitioned network with a single sink, only the sensors within the same partition with the sink can deliver their data without using an MDC.

5b that delay is increasing when scheduling is not applied. When applied, the delay increases up to 150 nodes and then starts declining. Even though we provide the average delay per node, the increase in delay when the number of nodes is increased can be attributed to longer paths to reach the sink. However, upon reaching the threshold as in the application of scheduling, the delay starts to decline. This is due to the shorter distance between the partitions with the increased node density which causes shorter tour lengths.

This paper presents an accurate reactive protocol, named HRTS, that synchronizes the sensor nodes’ clock based on the node’s demand. It minimizes the synchronization region dynamically to the set of nodes which request synchronization. HRTS improves the accuracy of the synchronization procedure by measuring time parameters accurately and removing delays accordingly. Compared with the conventional time synchronization protocols like PCTS and TPSN, HRTS also reduces energy consumption by decreasing the traffic overheads especially when the network is not very dense.

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